Description:
------------
This bug has been reported 2 years ago, but it is still present in last 5.0.2 version.
PHP installed on Windows 2000 server or on Windows XP, all with latest service packs. PHP run as ISAPI.

HOW TO TEST:
For destination IP $domain in my script, please use some remote machine with IIS 5.0 or IIS 5.1.
Try the script and it should pass.
Now, on REMOTE machine, go and crash IIS service. For example, you may crash it for sure this way:
- install PHP on remotemachine as ISAPI
- in PHP.INI enable some extension, which does not exist - try php_pdf.dll
- start IIS and IIS should hang

Now, run the script again to test hanged IIS machine. Script should exit with FATAL ERROR or in worst case, with IIS hang on your first machine.

Reproduce code:
---------------
<?php
$domain = ""; //enter some IP - see instructions below!
$port = "80";
$fp = fsockopen($domain,$port,$errno,$errstr,2) ;
if (!$fp){
             $output = '<br>SOCKET: '.$domain.':'.$port.' FAILED responding!';
} else {
             $output = '<br>SOCKET: '.$domain.':'.$port.' responded OK';
             fclose($fp);
}
?>



Expected result:
----------------
fsockopen() should return TRUE or FALSE, but in any case it should exit within set TIMEOUT value (which is 2 seconds in this case).

Actual result:
--------------
In case that destination socket is IIS and it is CRASHED or HANGED, the script will not terminate after 2 seconds, but will try open socket until PHP timeout occures.
And additionally - in some cases, if PHP is run on IIS 5.0 or 5.1, script may HANG and LOCK IIS so you need to restart machine. W3SVC stops responding.